Carb Spacer? Edelbrock w/ 318

I'm not sure which car this is in, so I can't really compare it to my experience. A quick and dirty method may be to place a ring of thin cardboard (cereal box, etc) of the target height on top of the air cleaner. Then gently close the hood, open and check for crushed cardboard. Lumps of modeling clay are good for this stuff too, but almost everybody can source a cereal box without leaving the house.